Home / 13,437.39-19,986.90-13,392.43

Finding the Fourth Proportional to 13,437.39, 19,986.90 and 13,392.43

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Solution

The fourth proportional to 13,437.39, 19,986.90 and 13,392.43 is: 19,920.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,437.39 : 19,986.90 = 13,392.43 : x
  2. Step 2: Convert to fraction form
    13,437.39/19,986.90 = 13,392.43/x
  3. Step 3: Cross multiply
    13,437.39x = 19,986.90 × 13,392.43
  4. Step 4: Simplify right side
    13,437.39x = 267,673,159.17
  5. Step 5: Solve for x
    x = 267,673,159.17/13,437.39
  6. Step 6: Final answer
    x = 19,920.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.